We're looking for long answers that provide some explanation and context. Don't just give a one-line answer; explain why your answer is right, ideally with citations. Answers that don't include explanations may be removed.

We're looking for long answers that provide some explanation and context. Don't just give a one-line answer; explain why your answer is right, ideally with citations. Answers that don't include explanations may be removed.

4

+1 If you are using 7zip, you do not even need to add a ".zip" extension.
– Aaron♦Oct 1 '14 at 17:09

This is most likely no practical solution, but you can import your kmz-file in google earth (open) and export it (rightlick -> save) it as kml.
Somehere out there is certainly a easy tool for conversion/extraction.

We're looking for long answers that provide some explanation and context. Don't just give a one-line answer; explain why your answer is right, ideally with citations. Answers that don't include explanations may be removed.

Thank you for your interest in this question.
Because it has attracted low-quality or spam answers that had to be removed, posting an answer now requires 10 reputation on this site (the association bonus does not count).